Column 1 gives the position, coloured on a yellow-to-red scale depending on the fraction of corresponding holo-structures where the residue is in contact with a ligand.Column 2 gives the 3-letter amino acid code, coloured according to physico-chemical type.

Chain ID's of residues are not mentioned in this page because all chains in the apo-structure refer to the same protein.

Table describing the holo-structures and ligands used to define
the binding sites.

Column 1 gives the PDB ID of the holo-structure.Column 2 gives the unique ID of the ligand;
a space-separated list of HET-groups that constitute
the ligand (see Methods).
Each HET-group in the ligand is uniquely identified by
a string in which the first four characters are the three-letter
HET ID from the PDB file followed by the chain ID from
the PISA file, and the last four characters are the residue sequence
number from the PDB file.Column 3 gives the number of atoms in each ligand.Column 4 gives the number of protein-ligand inter-atomic
contacts.